Building construction



Au so, 1938. R B, WLLARD 2,128,375

BUILDING CONSTRUCTION Filed Jan 13, 1958 L loa I5 11 L INVENTOR R BJWILLARD m BY ATTORNEY Patented Aug. 30, 1938 v 1 2,128,375

I UNITED STATES PATENT OFFICE BUILDING CONSTRUCTION Raymond B. Millard, Tulsa, Okla. Application January 13, 1938, Serial No. 184,814 2 Claims. (01. 7268),

This invention relates to a building construcand is positioned below web [2, the opposite ends tion, and particularly to "a cementitious slab or of sleeve l4 registering with suitable apertures panel for use in a floor orwall structure. provided in the flanges of the end pieces below A principal object of the present invention is the webs thereof. 5 to'provide a simple, efficient, and relatively in- A threaded nut l5, such as a conventional 5 expensive unitary slab or panel of fire-proof or hexagon nut, is fixedly attached to the outer face insulating nature, which is strong and durable, of each of flanges II, on the side of webs l2 which and having parts so arranged that companion is opposite with respect to each of the apertures slabs may be coupled together both along the registering with the ends ofv sleeves I3 and I4.

l0 sides or ends'in order to provide a highly stable That is, for each aperture or sleeve end opening composite structure. through one of the flanges, on one side of the web, Other objects and advantages of this inventhere is a corresponding nut attached to the tion will become apparent from the following flange on the opposite side of the web. The nuts detailed description when read in conjunction 55 are shown in vertical alignment with respect with the accompanying drawing. to the corresponding aperture or sleeve end, and 15 In the drawing: although this is the preferred arrangement, the Fig. l is a plan view of. the supporting metal nuts may b p d laterally along the flange structure of the slab prior to embedding same in o t e Co po d p tu e- However, in the cementitious material forming the final slab. every case, the individual nuts of each pair Fig. 2 is an end view thereof. thereof should be positioned directly opposite 20 Fig. 3 is a sectional view of the metal struceach nut on the correspond n flangesture taken along line 3-3 of Fig, 1, By the described arrangements of sleeves and Fig. 4 is a side view of the completed slab, nuts, a symmetrical structure is provided, which Fig. 5 is an end view thereof. is adapted to permit relatively easy and simple Fig. 6 is a section through a slab taken along connection of one slab to another, as will be more 25 line t'& of Fig. 4. fully described hereinafter.

Fig. 7 is an end view, showing the manner in The above described frame is embedded comwhich a pair of completed slabs are coupled top te y Within a ceme titious slab l6, which is gether, part of the cementitious material ofv the formed by pellring t t ous material, such as slabs being broken away for purposes of clarity, concrete, plastic insulating or refractory ma- 30 Fig. 8 is a fragmentary view in plan illustrating terial, into a form provided for this purpose and the manner of tying together companion slab arranged S0 that the outer edges Of webs 12 Will parts at a juncture point, and be flush with the edges of the finished slab. The Fig. 9 is a cross-sectional view taken along line o n rm is cored so s to provide in the of Fig finished slab tubular openings I! about each of 5 Referring to the drawing and particularly t the nuts l5 and about the apertures which register Figs 1, 2 d 3 which Show t metal framewith the ends of sleeves l3 and I4. Openings I! work of the structure of this invention, the are PTOVided for the Purpose Of p tt g the numeral ill designates generally the metal frame, insertion 0f Connecting bars e o panion having parallel side pieces Illa and end pieces Slabs are to be Connected together- 40 I01), all of which are constructed of T-irons and S- 8 and 9 i us rate the manner in which joined together toform a substantially rectanw f the finished slabs are connected h r gular frame, All of the T-iron pieces ar arin forming a continuous wall or floor structure. ranged with their flanges II extending vertically AS Shown, the Slabs are joined together a o with respect to the thickness of the slab, and with their o e s- 5 their respective webs l2 extending laterally out- The jointure is effected by laying the slabs ward from the perimeter of the rectangular strucalongside each other, one end of sleeve [3 being ture. placed opposite a nut [5 on the adjacent side of A hollow sleeve l3, positioned vertically above the neXt slab. One of the connecting bars web 52, extends across the interior of the frame which is in the form of an elong te p ew 50 between side pieces Illa, the opposite ends of. or carriage bolt h vin a head at one end and sleeve l3 registering with suitable apertures prothreads at the other, is inserted, threaded end vided in the opposite flanges ll above web [2. first, through the opposite end of sleeve l3 and A second hollow sleeve l4 extends across the inthe threads screwed into nut l5, until the slabs terior of the frame between the end pieces lllb are drawn together with suitable tightness. It 55 will be understood, of course, that the connecting bars l8, used in effecting this particular jointure, are of such length that when made up into nut E5, the head of the bar will exert pressure against its adjacent flange I I to effect the required tight connection.

If the slabs are to be connected together at their ends, the connection is made in exactly the same manner, the connecting bar l8 being inserted, however, through sleeve 14, and will be of the proper length for this purpose.

The sleeves I3 and M will serve also as stiffening members for the slabs, and for this purpose, the ends thereof are generally welded to the edges of the corresponding apertures.

By arranging the T-iron frame with the webs extending outwardly toward the edges of. the slab, a structure of superior strength and stiffness is thus provided.

What I claim and desire to secure by Letters Patent is:

1. An article of the character described comprising a pro-cast slab of cementitious material, having embedded entirely therein a reinforcing frame made up of parallel side and end pieces all formed of T-iron and all having outwardly extending webs, hollow sleeves extending between the opposite sides and end pieces and opening to the outer faces of the corresponding flanges, the sleeves extending in one direction being below the web and the sleeves extending in the opposite direction being above the web, threaded nuts attached to the outer faces of the flanges, one of said nuts being provided for each sleeve end and positioned on the opposite side of the web with respect to said sleeve end, and a plurality of apertures in the cementitious material extending from the outer edges of the slab, and registering with each of said nuts and sleeve ends to permit access thereto.

2. In a building construction, pre-cast slabs of cementitious material, each slab having embedded therein a metal reinforcing frame made up of parallel side and end pieces, all formed of T-iron and all arranged with outwardly extending webs, hollow sleeves extending between the opposite side and end pieces and opening to the outer faces of the corresponding flanges, the sleeves extending in one direction being below the webs and the sleeves extending in the opposite direction being above the webs, threaded nuts attached to the outer faces of the flanges, one of 'said nuts being provided for each sleeve end and positioned on the opposite side of the web with respect to said sleeve end, a plurality of apertures in the cementitious material, one of which registers with each of said nuts and sleeve ends and extend from the corresponding outer edge of each slab to its respective nut or sleeve end, a sleeve of one slab registering with a nut of an adjacent slab, and a threaded connecting bar extending through said last mentioned sleeve into threaded connection with said last mentioned nut.

RAYMOND B. MILLARD. 

